If I could go back to when I felt the way the OP did, approximately when I was 26 and still relatively young, I'd have gone back to downhill skiing. It was my original first love sport and the one that made me want to go to the Olympics. I was a damn good skier but never competed in it and I'm sure I would have been terrible at it competitively, mainly because the people who are actually good live on a mountain and ski every day.
When I started working (age 24), I lived in Park City and could have skied every day. I only went a couple times because I was dedicated to running and afraid to get injured skiing. Once I quit running I could have skied without that worry. But by then I was nowhere near mountains and hadn't thought of skiing in a long time.
Recently I've been watching a ton of skiing youtube videos and I now have a huge passion for it again but I'm in my 50s and the things that look fun on skis are things I'd never be able to do at my age. Injuries come much easier now, and while I would still enjoy cruising around on skis on unchallenging terrain, I certainly don't have the body to do steep runs, moguls, or anything where I got a ton of air. So it's kind of depressing realizing that in my 30s to 40s I was so busy that the opportunity to do this passed me by.
If you're reading this and on your way out of running, and still relatively young, make sure you do the physically demanding things that you won't be able to do when you're older. I get a thrill in my heart watching people ski online and wondering if I could manage those slopes (everything looks easy on camera but when you're at the top of it it's often scary AF).